Drier



1 the interior or heating-chamber thereof is di- UNITED STATES PATENT ()FFICE.

JOHN C. WINTERS AND JOHN M. PROPHET, OF MOUNT MORRIS, NEW YORK.

DRIER.

SPECIFICATION forming part of Letters Patent No. 425,842, dated April 15, 1890.

Application filed May 15,

To all whom it may concern:

Be it known that We, JOHN G. WVINTERs and JOHN M. PROPHET, both citizens of the United States, residing at Mount Morris, in the county of Livingston and State of New York, have invented certain new and useful Improvements in Driers, of which the following is a specification, reference being had therein to the accompanying drawing.

Our invention relates to that class of driers in which the material to be dried is passed through an inclined rotating cylinder, the object of our invention being to provide a drier having a greater capacity for drying than the steam-heated driers now in use in proportion to the size of the cylinder and amount of fuel required to heat the same. To this end we provide a heating-furnace preferably having a dome to give a large exposure of heated metal to the incoming air, said dome being in an inclosed chamber opening through a large tube or pipe directly into the drying-cylinder, the heating dome being provided with a smoke-pipe which passes centrally through the rotating drying-cylinder, and which is preferably connected with said cylinder to re tate therewith.

In the accompanying drawing, which is a view partly in section of an apparatus embodying our invention, A denotesan inclined rotating drying-cylinder supported on wheels or rollers a and provided with an encircling gear a, engaged by a gear wheel on a driving-shaft 13, having driving-pulleys Z), these parts being all of the usual construction.

C denotes aheating-furnace having inclosing-walls, within which is a heating-dome D, the space immediately below said dome and the interior of the latter beingthe combus tion-chamber, c denoting the grate and d the ash-pit of the furnace. The furnace is arranged adjacent to the drying-cylinder, and

rectly connected by an air chamber or pipe 6 with the rotary drying-cylinder, said pipe being of a proper size to closely fit the lower end of the said cylinder, and being partly cut away at its lower side at e to form an outlet or delivery passage for the material passing through the cylinder.

1889. Serial No. 310,801. (No model.)

- To economize fully the heat of the furnace, the dome D is provided with a smoke-pipe E, passin centrally through the rotary cylinder, and preferably connected with the latter either by rods or by jacks f of usual construction to rotate therewith, said pipe in such instance revolving on stationary bearings e at its ends and opening into anysuitable draft pipe or chimney, as F. The said pipe E may, however, be stationary.

The cylinder A has a stationary head A, to which extends an exhaust-pipe A said exhaust-pipe being connected with an exhaustfan, all as is usual with this class of driers.

The heating-chamber of the furnace has an inlet-passage a for the air to be heated. The feeding and delivery apparatus for conveying the material to and away from the rotary cylinder is or may be of usual construction, and, as it forms no part of our invention, does not require illustration or particular description.

The operation of our improved drier will be readily understood from the foregoing, and by practical tests we have found that the capacity of our drier for drying is nearly or fully fifty per cent. greater than the similar but steam-heated driers now in use.

WVe claim and desire to secure by Letters Patent- The combination, with an inclined rotary drying-cylinder, of a furnace O, placed adjacent thereto and provided with a heatingdome D, an air pipe or chamber e directly connecting the heating-chamber of said furnace with the interior of said cylinder and of a diameter approximately equal to that of the latter, and a smoke-pipe passing from said dome through said air pipe or chamber and cylinder, substantially as set forth.

In testimony-whereof we affix our signatures in presence of two witnesses.

JOHN C. WINTERS. JOHN M. PROPHET.

lVitnesses:

HENRY CALVER, A. V. CUsHMAN. 

